init basic signal player chinese chess game

Main.tscn

@@ -0,0 +1,30 @@
+[gd_scene load_steps=3 format=3 uid="uid://boa4od72355o4"]
+
+[ext_resource type="Script" path="res://Main.cs" id="1_h4cv2"]
+[ext_resource type="PackedScene" uid="uid://b1tx7v3230wab" path="res://Scenes/Chessboard.tscn" id="2_bx85x"]
+
+[node name="Main" type="Node2D"]
+script = ExtResource("1_h4cv2")
+
+[node name="Chessboard" parent="." instance=ExtResource("2_bx85x")]
+position = Vector2(360, 660)
+scale = Vector2(2.5, 2.5)
+
+[node name="Undo" type="Button" parent="."]
+offset_left = 200.0
+offset_top = 50.0
+offset_right = 300.0
+offset_bottom = 150.0
+theme_override_font_sizes/font_size = 32
+text = "撤回"
+
+[node name="ReInit" type="Button" parent="."]
+offset_left = 450.0
+offset_top = 50.0
+offset_right = 550.0
+offset_bottom = 150.0
+theme_override_font_sizes/font_size = 32
+text = "重开"
+
+[connection signal="pressed" from="Undo" to="Chessboard" method="undo"]
+[connection signal="pressed" from="ReInit" to="Chessboard" method="redo"]